Adjusting The Resonance Of The Aliquot Strings (Duplex Scale); Adjusting The Resonant Sounds When The Keys Are Pressed (String Resonance); Adjusting The String Resonance Produced When A Key Is Released (Key Off Reso.); Adjusting The Sound Of The Hammer Strike (Hammer Noise) - Roland RD-300GX Owner's Manual

Adjusting the Resonance of the Aliquot
Strings (Duplex Scale)
This adjusts the sound of the sympathetically vibrating aliquot
strings on an acoustic piano.
Parameter Value
Duplex Scale
0–127
What are Duplex Scale?
The Duplex Scale is a system of sympathetically vibrating
strings sometimes included in grand pianos.
These sympathetically vibrating strings are not struck
directly with hammers, but sound by vibrating in
sympathy with the vibrations of other strings. By
resonating with the overtones, these strings add richness
and brilliance to the sound. These sympathetic strings are
added only to the high register above approximately C4.
Since they do not have a damper (a mechanism that
stops them from sounding), they will continue sounding
even after you play a note and then release it to stop the
sound of the string that was actually struck.
Adjusting the Resonant Sounds
when the Keys are Pressed
(String Resonance)
When the keys are pressed on an acoustic piano, the strings
for keys that are already pressed also vibrate sympathetically.
The function used to reproduce is called "String Resonance."
Parameter Value
OFF,
String Resonance
1–127
Description
Higher values will increase
the volume of the sympathetic
vibration.
Description
Increasing the value will
increase the amount of effect.
Making Detailed Settings for the ONE TOUCH Tones
Adjusting the String Resonance
Produced when a Key is Released
(Key Off Reso.)
This adjusts resonances such as the key-off sound of an
acoustic piano (subtle sounds that are heard when you release
a key).
Parameter
Key Off Reso.
OFF,
(Key Off
1–127
Resonance)
Adjusting the Sound of the Hammer
Strike (Hammer Noise)
This adjusts the sound of the hammer striking the string of an
acoustic piano.
Parameter
Hammer
-2–0–+2
Noise
Precise Modification of Chord
Sonorities (Stretch Tune)
Changes the pitch using the "stretch tune" method typically
used on acoustic pianos. This makes high-range sounds
slightly higher in pitch, and low-range sounds slightly lower in
pitch.
Parameter Value
OFF
Stretch
Tune
ON
Value Description
Higher values will increase
the volume of the
resonances.
Value Description
Higher values will increase
the sound of the hammer
striking the string.
Description
No stretch tune.
This is the standard tuning curve.
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